Anatomy of ulna bone 🦴|Khyber medical university Peshawar lectures|BS paramedics lectures..

The ulna is one of the two long bones in the forearm, the other being the radius. It is located on the opposite side of the radius, aligning with the little finger. The ulna is slightly longer than the radius and plays a significant role in the structure and function of the arm.

Key features of the ulna include:

1. Structure: The ulna has a more complex shape than the radius. It consists of three main parts: the olecranon (the elbow), the shaft, and the distal end. The olecranon is the prominent bony tip of the elbow that you can feel when you touch your elbow.

2. Function: The ulna provides stability to the forearm and supports the movement of the elbow joint. It allows for flexion and extension of the arm, as well as some rotation.

3. Articulations: The ulna articulates with several bones. At its proximal end, it forms a joint with the humerus at the elbow. At the distal end, it connects with the wrist bones, but it does not directly articulate with the carpal bones like the radius does.

4. Injuries: Common injuries to the ulna include fractures, especially in the olecranon area, which can occur from falls or direct impacts.

Overall, the ulna is essential for the proper function of the arm, providing both support and mobility.
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